Text to Speech

Synthesize natural speech from text using your device's built-in voice engine. 100% on-device and private.

ihatetools / audio / text-to-speech

Text to Synthesize

Sample:

30 words • 186 characters

Voice & Pitch Parameters

Installed System Voice (0 detected)

Speed / Rate1x

0.5x (Slow)1.0x2.0x (Fast)

Pitch1x

0.5x (Deep)1.0x (Normal)1.5x (High)

On-Device Privacy & Download Notice: The browser's native SpeechSynthesis API renders voice audio directly through your device's operating system hardware. Modern browser security sandboxes prevent websites from intercepting OS synthesis streams into raw downloadable audio files without external microphone permissions. High-fidelity playback occurs completely on-device with zero data leaving your machine.

How it works

Enter or Paste Text

Type, paste, or select demo text to read aloud.

Customize Voice & Speed

Choose from any installed system voices on your device, and fine-tune rate and pitch sliders.

Listen with Word Tracking

Play speech with real-time word highlighting, pause, or resume on demand.

Frequently Asked Questions

Yes! Unlike cloud TTS APIs that send your text to third-party servers, this tool utilizes your operating system's native SpeechSynthesis engine directly on your device.

Web browser security specifications intentionally prevent JavaScript applications from tapping into the raw operating system synthesizer audio output without requesting microphone capture permissions. Immediate high-fidelity on-device playback is provided.

The tool automatically detects all voices installed in your operating system (Windows Speech, macOS Siri/System Voices, Android, or iOS). Installing additional language packs on your computer adds more voices automatically.